Maths-
General
Easy

Question

Find the simplified Quotient , and state the domain.
fraction numerator begin display style fraction numerator x squared minus 36 over denominator x squared minus 3 x minus 18 end fraction end style over denominator begin display style fraction numerator x squared plus 2 x minus 24 over denominator x squared plus 7 x plus 12 end fraction end style end fraction

hintHint:

The expansions of certain identities are:
open parentheses x squared minus a squared close parentheses equals left parenthesis x plus a right parenthesis left parenthesis x minus a right parenthesis
left parenthesis x plus a right parenthesis left parenthesis x plus b right parenthesis equals x squared plus left parenthesis a plus b right parenthesis x plus a b
We are asked to find the quotient and state the domain of the expression.

The correct answer is: the domain is; (-∞, 4) ∪ (4, ∞)


    Step 1 of 3:
    The given expression is: fraction numerator begin display style fraction numerator x squared minus 36 over denominator x squared minus 3 x minus 18 end fraction end style over denominator begin display style fraction numerator x squared plus 2 x minus 24 over denominator x squared plus 7 x plus 12 end fraction end style end fraction
    Take the reciprocal of the second expression and then multiply it with the first expression. This is because it has the same effect as division;

    fraction numerator x squared minus 36 over denominator x squared minus 3 x minus 18 end fraction cross times fraction numerator x squared plus 7 x plus 12 over denominator x squared plus 2 x minus 24 end fraction
    Step 2 of 3:
    Simplify the expression and cancel out the common factors;
    fraction numerator x squared minus 36 over denominator x squared minus 3 x minus 18 end fraction cross times fraction numerator x squared plus 7 x plus 12 over denominator x squared plus 2 x minus 24 end fraction equals fraction numerator x squared minus 6 squared over denominator x squared minus 6 x plus 3 x minus 18 end fraction cross times fraction numerator x squared plus 4 x plus 3 x plus 12 over denominator x squared plus 6 x minus 4 x minus 24 end fraction
    equals fraction numerator left parenthesis x minus 6 right parenthesis left parenthesis x plus 6 right parenthesis over denominator x left parenthesis x minus 6 right parenthesis plus 3 left parenthesis x minus 6 right parenthesis end fraction cross times fraction numerator x left parenthesis x plus 4 right parenthesis plus 3 left parenthesis x plus 4 right parenthesis over denominator x left parenthesis x plus 6 right parenthesis minus 4 left parenthesis x plus 6 right parenthesis end fraction
    equals fraction numerator left parenthesis x minus 6 right parenthesis left parenthesis x plus 6 right parenthesis over denominator left parenthesis x plus 3 right parenthesis left parenthesis x minus 6 right parenthesis end fraction cross times fraction numerator left parenthesis x plus 3 right parenthesis left parenthesis x plus 4 right parenthesis over denominator left parenthesis x minus 4 right parenthesis left parenthesis x plus 6 right parenthesis end fraction
    equals fraction numerator x plus 4 over denominator x minus 4 end fraction
    Thus, the quotient is fraction numerator x plus 4 over denominator x minus 4 end fraction.
    Step 3 of 3:
    The domain of the expression should exclude the value for which the denominator attains a zero value.
    x - 4 = 0
                                                                                                              x = 4
    Thus, the domain is; (-∞, 4) ∪ (4, ∞)

    Division of an expression by zero is not defined. That is why; we exclude the values of zero for the denominator.

    Related Questions to study

    General
    Maths-

    Find the simplified form of each product , and give the domain.
    fraction numerator x cubed minus 4 x over denominator 6 x squared minus 13 x minus 5 end fraction cross times open parentheses 2 x cubed minus 3 x squared minus 5 x close parentheses

    Find the simplified form of each product , and give the domain.
    fraction numerator x cubed minus 4 x over denominator 6 x squared minus 13 x minus 5 end fraction cross times open parentheses 2 x cubed minus 3 x squared minus 5 x close parentheses

    Maths-General
    General
    Maths-

    What is the simplified form of each rational expression ? What is the domain ?
    fraction numerator ab cubed minus 9 ab over denominator 12 ab squared plus 12 ab minus 144 straight a end fraction

    What is the simplified form of each rational expression ? What is the domain ?
    fraction numerator ab cubed minus 9 ab over denominator 12 ab squared plus 12 ab minus 144 straight a end fraction

    Maths-General
    General
    Maths-

    Write the equation in slope-intercept form of the line that passes through the points (4, 0) and (0, 2).

    The slope intercept form is one way to express the line equation y = mx + b. The slope of the line is denoted by m, while the y-intercept is by b. When you want to find a point on a line or solve for y, if you know the value of x, you use the slope-intercept form.
    Y = mx+b
    y = coordinate y
    m = slope
    x = coordinate x
    b = y-intercept
    Given two points on a line, we can write an equation for that line by first determining the slope between those points and then solving for the y-intercept in the slope-intercept equation y = mx + b.

    Write the equation in slope-intercept form of the line that passes through the points (4, 0) and (0, 2).

    Maths-General

    The slope intercept form is one way to express the line equation y = mx + b. The slope of the line is denoted by m, while the y-intercept is by b. When you want to find a point on a line or solve for y, if you know the value of x, you use the slope-intercept form.
    Y = mx+b
    y = coordinate y
    m = slope
    x = coordinate x
    b = y-intercept
    Given two points on a line, we can write an equation for that line by first determining the slope between those points and then solving for the y-intercept in the slope-intercept equation y = mx + b.

    parallel
    General
    Maths-

    Find the simplified Quotient , and state the domain.
    fraction numerator begin display style fraction numerator 2 x squared plus 5 x minus 3 over denominator x squared minus 4 x minus 21 end fraction end style over denominator begin display style fraction numerator 2 x squared plus 5 x minus 3 over denominator 3 x plus 9 end fraction end style end fraction

    Find the simplified Quotient , and state the domain.
    fraction numerator begin display style fraction numerator 2 x squared plus 5 x minus 3 over denominator x squared minus 4 x minus 21 end fraction end style over denominator begin display style fraction numerator 2 x squared plus 5 x minus 3 over denominator 3 x plus 9 end fraction end style end fraction

    Maths-General
    General
    Maths-

    What is the product of fraction numerator x plus 2 over denominator x to the power of 4 minus 16 end fraction straight & x cubed plus 4 x squared minus 12 x.

    What is the product of fraction numerator x plus 2 over denominator x to the power of 4 minus 16 end fraction straight & x cubed plus 4 x squared minus 12 x.

    Maths-General
    General
    Maths-

    What is the simplified form of each rational expression ? What is the domain ?
    fraction numerator straight y squared minus 5 straight y minus 24 over denominator straight y squared plus 3 straight y end fraction

    What is the simplified form of each rational expression ? What is the domain ?
    fraction numerator straight y squared minus 5 straight y minus 24 over denominator straight y squared plus 3 straight y end fraction

    Maths-General
    parallel
    General
    Maths-

    Write the equation in slope-intercept form of the line that passes through the points (0, 1) and (2, 2).

    Write the equation in slope-intercept form of the line that passes through the points (0, 1) and (2, 2).

    Maths-General
    General
    Maths-

    Find the simplified form of each product , and give the domain.
    fraction numerator x plus 3 over denominator 4 x end fraction cross times fraction numerator 3 x minus 18 over denominator 6 x plus 18 end fraction cross times fraction numerator x squared over denominator 4 x plus 12 end fraction

    Find the simplified form of each product , and give the domain.
    fraction numerator x plus 3 over denominator 4 x end fraction cross times fraction numerator 3 x minus 18 over denominator 6 x plus 18 end fraction cross times fraction numerator x squared over denominator 4 x plus 12 end fraction

    Maths-General
    General
    Maths-

    Sketch the graph of y = 3x - 6

    Sketch the graph of y = 3x - 6

    Maths-General
    parallel
    General
    Maths-

    The volume , in cubic units , of a rectangular prism with a square base can be represented by 25 x cubed plus 200 x squared. The height in units can be represented by x + 8. What is the side length of the base of the rectangular prism, in unit.

    The volume , in cubic units , of a rectangular prism with a square base can be represented by 25 x cubed plus 200 x squared. The height in units can be represented by x + 8. What is the side length of the base of the rectangular prism, in unit.

    Maths-General
    General
    Maths-

    Write an equivalent expression , state the domain:
    fraction numerator 3 straight x squared plus 15 straight x over denominator straight x squared plus 3 straight x minus 10 end fraction

    Write an equivalent expression , state the domain:
    fraction numerator 3 straight x squared plus 15 straight x over denominator straight x squared plus 3 straight x minus 10 end fraction

    Maths-General
    General
    Maths-

    Sketch the graph of, y equals 5 over 2 x minus 1 half.

    Sketch the graph of, y equals 5 over 2 x minus 1 half.

    Maths-General
    parallel
    General
    Maths-

    Sketch the graph of, y equals 3 over 8 x plus 5.

    Sketch the graph of, y equals 3 over 8 x plus 5.

    Maths-General
    General
    Maths-

    Find the simplified form of each product , and give the domain.
    fraction numerator x squared minus 19 over denominator 9 minus x end fraction cross times fraction numerator x squared plus x minus 90 over denominator x squared plus 14 x plus 40 end fraction

    Find the simplified form of each product , and give the domain.
    fraction numerator x squared minus 19 over denominator 9 minus x end fraction cross times fraction numerator x squared plus x minus 90 over denominator x squared plus 14 x plus 40 end fraction

    Maths-General
    General
    Maths-

    Write an equivalent expression , state the domain .
    fraction numerator x cubed plus 4 x squared minus 12 x over denominator x squared plus x minus 30 end fraction

    Write an equivalent expression , state the domain .
    fraction numerator x cubed plus 4 x squared minus 12 x over denominator x squared plus x minus 30 end fraction

    Maths-General
    parallel

    card img

    With Turito Academy.

    card img

    With Turito Foundation.

    card img

    Get an Expert Advice From Turito.

    Turito Academy

    card img

    With Turito Academy.

    Test Prep

    card img

    With Turito Foundation.